SX8743 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

View to exact match

SX8743

Precision Diode Digital Temperature For Up To 3 External Sensors

Semtech Corporation 

SX8733/SX8743/SX8744

Digital temperature sensor

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

7. Register / Memory Map

Each register is described in the following register memory map. These are identified by a Register Name and

corresponding hexadecimal register address.

7.1. Memory Map

0x00

0x06

0x07

0x20

0x21

0x22

0x23

0x24

0x25

0x26

0x27

0x28

0x29

0x2A

0x2B

0x2C

0x2D

0x2E

0x2F

0x30

0x31

RegConfig

RegExtGain

RegExtOffset

RegDeviceID

RegDeviceVersion

RegSensor

RegAlarm1

RegAlarm2

RegAlarmSet

RegAlarmHyst

RegADCRate

RegIntTempMSB

RegIntTempLSB

RegExtTemp1MSB

RegExtTemp1LSB

RegExtTemp2MSB

RegExtTemp2LSB

RegExtTemp3MSB

RegExtTemp3LSB

RegControl

RegStatus

Identification Registers

Determines the chip variant and the communication interface (I2C or SMBus)

Sets the calibration gain for remote temperature measurement

Sets the calibration offset for remote temperature measurement

Read-only ID = 0x33

Read-only circuit revision

Configuration Registers

Defines which sensors are scanned in sequence

Alarm1 threshold

Alarm2 threshold

Defines which sensors control alarms 1 and 2, and whether over-/under- temperature triggers for

each alarm

Alarm hysteresis

Temperature conversion rate

Temperature Registers

TJ temperature reading for internal sensor, integer part, LSB = 1ºC

TJ temperature reading for internal sensor, fractional part, LSB = 0.125ºC

TD1 temperature reading for external sensor 1, integer part, LSB = 1ºC

TD1 temperature reading for external sensor 1, fractional part, LSB = 0.125ºC

TD2 temperature reading for external sensor 2, integer part, LSB = 1ºC

TD2 temperature reading for external sensor 2, fractional part, LSB = 0.125ºC

TD3 temperature reading for external sensor 3, integer part, LSB = 1ºC

TD3 temperature reading for external sensor 3, fractional part, LSB = 0.125ºC

General Registers

General Control register

General Status register

Table 6 Memory map

7.2. Registers Description

Bits

Name

7:6

Reserved

5

SetInterface

Mode

rw

rw

4:0

Mode

rw

Reset

00

1

00000

Addr: 0x00 RegConfig

Description

Write to 00

Select between I2C or SMBus interface

0: I2C (Time Out Disabled)

1: SMBUS

Select the configuration mode

00000: Mode 0

00001: Mode 1

...

10010: Mode 18

10100: Mode 20

ACS Revision 2.91/February 2010

©2010 Semtech Corp.

Page 16

www.semtech.com

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